List Box glitch - Deselects values

[TJBernard]

I have just come across what appears to be a glitch in MS Access, and I am not sure if there is a fix or not.

Maybe someone here has run into it.

I have a list box on a form with a large row set (over 2,187 rows). I have set the list box up with the "Multi Select" property of "Extended" which allows the users to use the [CTRL] and [SHIFT] keys, rather than clicking on every single value.

But, if the users select the entire list, and then deselect a value some where in the middle of the list box (by holding down [CTRL] and clicking on the value they don't want) and then take the focus off the list box, all the values below the value they de-selected automatically deselect. Even though before, they were in fact selected.

It is almost like a glitch, I can't think of any code to trap for it. I am just seeing if anyone else has run into it, and if so, if there is a fix.

Thank you,

T.J.

 

[boblarson]

Make sure that the MULTI-SELECT property is set to EXTENDED and not SIMPLE.

 

[boblarson]

And I just did a test on a list box with over 22,000 rows and it works fine for me.

 

[TJBernard]

Ah ha, I found out more information.

Yes, the List Box property does have the Multi Select set to "Extended".

But this is interesting. It is an MS Access 2003 database. When I open it in MS Access 2003, the list box works as I expect, I can deselect the one value in the middle I want to deselect.

But if I open the .mdb file in MS Access 2007, when I click on the value in the middle to Deselect, all the values below this value automatically deselect.

It is an Access 2003 .mdb database, but the glitch only occurs when I open it in MS Access 2007.

I then converted the file to MS Access 2007 (.accdb) and the error still occurs.

So this must only be a glitch with MS Access 2007 files.

Interesting.

 

[boblarson]

So this must only be a glitch with MS Access 2007 files.

I'll test tonight on mine too (when I get home where I have 2007 installed) and see if it does it for me.

 

[TJBernard]

I'll test tonight on mine too (when I get home where I have 2007 installed) and see if it does it for me.

Thank you for your help. We have just started moving towards MS Access 2007 here at work, so I have 2003 on my desktop and 2007 on my lap top.

I had a user complain about it, and I thought "hmmm, never heard of that before" and sure as can be, I tested it out and had the same problems.

I have a list box with over 2,000 rows. To recreate the error, I can open up either a .mdb or a .accdb file in MS Access 2007. On the list box, I selec the very first row, then scroll down the scroll bar to the very bottom, hold down the [SHIFT] key and click the last row, and all the rows are selected in the list box.

I then scroll back up half way or so, and hold down the [CTRL] key and click on a few rows to deselect them.

After this, in MS Access 2007, if you scroll back up the list a little ways, or click off the list box, all the rows below the rows you deselect, will automatically deselect.

Strange and interesting and my users, oh my, LOL.

 

[TJBernard]

I got some more time to play with this.

I was able to recreate the error in MS Access 2007, with a list box containing only 20 rows, rather than 2,000+.

So the size of the row source for the list box is not the concern. 20 is rather normal, I would think.

With the 20 values, I could see all the rows without using the scroll bar. So I selected all 20 by clicking on the first, then holding down the [SHIFT] key and click on the last row.

After this I held down the [CTRL] key and Deselected some values in the middle of the list box.

After this, I clicked off of the list box, and all the selected values below the values I Deselected automatically and incorrectly deselected.

So it must be a bug with MS Access 2007. I believe we have received all the Service Packs here at work.

Weird that no one else has run into this.